A preliminary assessment of growth and production of Nile tilapia, Oreochromis niloticus L., Fed Azolla-based-diets in earthen ponds

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

The effects of the use of Azolla filiculoides Lam., as an alternative source of protein, on growth performances and production of Nile tilapia, Oreochromis niloticus, reared in wetland ponds was evaluated. Three isonitrogenous (27% CP) and isocaloric (4019.14 kcal/g) diets A0, A10, and A20 containing three levels of Azolla 0, 10, and 20, respectively, as a partial substitution of fish meal, were fed to three triplicate ponds of male O. niloticus (initial mean weight = 15.5 g). The Azolla-free diet (0% Azolla) served as a control. The growth performances and production are good in all treatments after 90 days of experiment. No significant differences among dietary treatment (P > 0.05) were noticed for daily growth rate (1.15 g/day-1.26 g/day), specific growth rate (2.27-2.35%/day), survival (74.78-77.43%), annual fish production (31.01-32.75 kg/are/year), and feed conversion ratio (1.06-1.13). Thus, similar growth and production performances were observed with fishes fed with A0 and those fed with A20. Therefore, up to 20% of Azolla in the ration of O. niloticus has no negative effect on either growth or production. The cost-benefit analysis showed a considerable reduction in the production costs of one kilogram of fish with increasing Azolla levels in diet, amounting to US$0.09 between A0 and A10 (P > 0.05) and US$0.14 between A0 and A20 (P <0.05). These results indicate that, on an isonitrogenous and isocaloric basis, using Azolla at up to 20% in a diet can constitute a viable alternative source of protein for O. niloticus in tropical wetlands. © 2007 The Haworth Press, Inc. All rights reserved.

langue originaleAnglais
Pages (de - à)55-69
Nombre de pages15
journalJournal of Applied Aquaculture
Volume19
Numéro de publication4
Les DOIs
étatPublié - 2007

Empreinte digitale

Azolla
Oreochromis niloticus
pond
diet
fish
wetland
protein sources
protein
growth performance
cost-benefit analysis
wetlands
production cost
Azolla filiculoides
substitution
cost benefit analysis
fish production
fish meal
production costs
specific growth rate
fish feeds

Citer ceci

@article{117435bc5b154352b968ad91f88e7a22,
title = "A preliminary assessment of growth and production of Nile tilapia, Oreochromis niloticus L., Fed Azolla-based-diets in earthen ponds",
abstract = "The effects of the use of Azolla filiculoides Lam., as an alternative source of protein, on growth performances and production of Nile tilapia, Oreochromis niloticus, reared in wetland ponds was evaluated. Three isonitrogenous (27{\%} CP) and isocaloric (4019.14 kcal/g) diets A0, A10, and A20 containing three levels of Azolla 0, 10, and 20, respectively, as a partial substitution of fish meal, were fed to three triplicate ponds of male O. niloticus (initial mean weight = 15.5 g). The Azolla-free diet (0{\%} Azolla) served as a control. The growth performances and production are good in all treatments after 90 days of experiment. No significant differences among dietary treatment (P > 0.05) were noticed for daily growth rate (1.15 g/day-1.26 g/day), specific growth rate (2.27-2.35{\%}/day), survival (74.78-77.43{\%}), annual fish production (31.01-32.75 kg/are/year), and feed conversion ratio (1.06-1.13). Thus, similar growth and production performances were observed with fishes fed with A0 and those fed with A20. Therefore, up to 20{\%} of Azolla in the ration of O. niloticus has no negative effect on either growth or production. The cost-benefit analysis showed a considerable reduction in the production costs of one kilogram of fish with increasing Azolla levels in diet, amounting to US$0.09 between A0 and A10 (P > 0.05) and US$0.14 between A0 and A20 (P <0.05). These results indicate that, on an isonitrogenous and isocaloric basis, using Azolla at up to 20{\%} in a diet can constitute a viable alternative source of protein for O. niloticus in tropical wetlands. {\circledC} 2007 The Haworth Press, Inc. All rights reserved.",
keywords = "Alternative protein, Azolla, Food security, Oreochromis niloticus, Pond, Poverty",
author = "Youssouf Abou and Fiogb, {Emile D.} and Micha, {Jean Claude}",
year = "2007",
doi = "10.1300/J028v19n04_03",
language = "English",
volume = "19",
pages = "55--69",
journal = "Journal of Applied Aquaculture",
issn = "1045-4438",
publisher = "Taylor & Francis",
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A preliminary assessment of growth and production of Nile tilapia, Oreochromis niloticus L., Fed Azolla-based-diets in earthen ponds. / Abou, Youssouf; Fiogb, Emile D.; Micha, Jean Claude.

Dans: Journal of Applied Aquaculture, Vol 19, Numéro 4, 2007, p. 55-69.

Résultats de recherche: Contribution à un journal/une revueArticle

TY - JOUR

T1 - A preliminary assessment of growth and production of Nile tilapia, Oreochromis niloticus L., Fed Azolla-based-diets in earthen ponds

AU - Abou, Youssouf

AU - Fiogb, Emile D.

AU - Micha, Jean Claude

PY - 2007

Y1 - 2007

N2 - The effects of the use of Azolla filiculoides Lam., as an alternative source of protein, on growth performances and production of Nile tilapia, Oreochromis niloticus, reared in wetland ponds was evaluated. Three isonitrogenous (27% CP) and isocaloric (4019.14 kcal/g) diets A0, A10, and A20 containing three levels of Azolla 0, 10, and 20, respectively, as a partial substitution of fish meal, were fed to three triplicate ponds of male O. niloticus (initial mean weight = 15.5 g). The Azolla-free diet (0% Azolla) served as a control. The growth performances and production are good in all treatments after 90 days of experiment. No significant differences among dietary treatment (P > 0.05) were noticed for daily growth rate (1.15 g/day-1.26 g/day), specific growth rate (2.27-2.35%/day), survival (74.78-77.43%), annual fish production (31.01-32.75 kg/are/year), and feed conversion ratio (1.06-1.13). Thus, similar growth and production performances were observed with fishes fed with A0 and those fed with A20. Therefore, up to 20% of Azolla in the ration of O. niloticus has no negative effect on either growth or production. The cost-benefit analysis showed a considerable reduction in the production costs of one kilogram of fish with increasing Azolla levels in diet, amounting to US$0.09 between A0 and A10 (P > 0.05) and US$0.14 between A0 and A20 (P <0.05). These results indicate that, on an isonitrogenous and isocaloric basis, using Azolla at up to 20% in a diet can constitute a viable alternative source of protein for O. niloticus in tropical wetlands. © 2007 The Haworth Press, Inc. All rights reserved.

AB - The effects of the use of Azolla filiculoides Lam., as an alternative source of protein, on growth performances and production of Nile tilapia, Oreochromis niloticus, reared in wetland ponds was evaluated. Three isonitrogenous (27% CP) and isocaloric (4019.14 kcal/g) diets A0, A10, and A20 containing three levels of Azolla 0, 10, and 20, respectively, as a partial substitution of fish meal, were fed to three triplicate ponds of male O. niloticus (initial mean weight = 15.5 g). The Azolla-free diet (0% Azolla) served as a control. The growth performances and production are good in all treatments after 90 days of experiment. No significant differences among dietary treatment (P > 0.05) were noticed for daily growth rate (1.15 g/day-1.26 g/day), specific growth rate (2.27-2.35%/day), survival (74.78-77.43%), annual fish production (31.01-32.75 kg/are/year), and feed conversion ratio (1.06-1.13). Thus, similar growth and production performances were observed with fishes fed with A0 and those fed with A20. Therefore, up to 20% of Azolla in the ration of O. niloticus has no negative effect on either growth or production. The cost-benefit analysis showed a considerable reduction in the production costs of one kilogram of fish with increasing Azolla levels in diet, amounting to US$0.09 between A0 and A10 (P > 0.05) and US$0.14 between A0 and A20 (P <0.05). These results indicate that, on an isonitrogenous and isocaloric basis, using Azolla at up to 20% in a diet can constitute a viable alternative source of protein for O. niloticus in tropical wetlands. © 2007 The Haworth Press, Inc. All rights reserved.

KW - Alternative protein

KW - Azolla

KW - Food security

KW - Oreochromis niloticus

KW - Pond

KW - Poverty

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U2 - 10.1300/J028v19n04_03

DO - 10.1300/J028v19n04_03

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SP - 55

EP - 69

JO - Journal of Applied Aquaculture

JF - Journal of Applied Aquaculture

SN - 1045-4438

IS - 4

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